QCD effects and $b$-tagging at LEP I

Details QCD effects and $b$-tagging at LEP I QCD effects and $b$-tagging at LEP I

1995-03-16

arxiv.org/abs/hep-ph/9503354v1

Z.Phys. C69 (1996) 635-646

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, latex, 11 figures appended (tarred and uuencoded), the complete paper is available via anonymous ftp at ftp://cpt1

Scientific paper

We analyze the impact of using $b$-tagged samples in studying non-Abelian effects due to QCD in $e^+e^-\ar 4$jet events at $\sqrt s=M_{Z^0}$, using angular variable analyses and comparisons with $e^+e^-\ar 3 \mbox{jet}\gamma$ events. We find that QCD effects are largely enhanced in $b$-quark samples with respect to `unflavoured' ones, where energy-ordering is used to distinguish between gluon and quark jets. We show that the $b$-quark mass influences the angular distributions significantly and should not be neglected

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